diff --git a/randr/rroutput.c b/randr/rroutput.c
index 82c2530fe..0a211e572 100644
--- a/randr/rroutput.c
+++ b/randr/rroutput.c
@@ -538,7 +538,7 @@ ProcRRGetOutputInfo (ClientPtr client)
     return client->noClientException;
 }
 
-void
+static void
 RRSetPrimaryOutput(ScreenPtr pScreen, rrScrPrivPtr pScrPriv,
 		   RROutputPtr output)
 {